210 NORTH AMERICAN FLORA 
Ovary with the pubescence, if any, in the form of sparse, 
inconspicuous curled white hairs interspersed among the 
bristles ; leaves conspicuously glandular beneath, usually 
with little or no pubescence. 
Leaves decidedly glandular beneath; bristles of the ovary 
chiefly or wholly gland-tipped; bark of new growth 
usually bristly; sepals purple, and including the hypan- 
thium 11-15 mm. long. 
Leaves thick, usually rugose, the lower surface covered 
with velvety pubescence interspersed with long- 
stalked glands. : 
Leaves thin, not rugose, the lower surface sparingly or 
not at all pubescent when fully expanded, the 
glands, except those on the veins, mostly sessile or 
nearly so. 
New growth densely bristly; petals 45 mm. long, 
barely or not at all exceeded by the filaments. 
New growth usually only sparingly bristly; petals 
2.5-3.5 or sometimes 4 mm. in length, the filaments 
nearly twice as long. 
Leaves almost wholly devoid of glands beneath ; bristles of 
the ovary chiefly or wholly glandless; bark of new 
growth without bristles ; sepals commonly green, and 
including the hypanthium 9-11 mm. long. 
Leaves glabrous or nearly so; petals one half the length 
of the filaments or less; sepals commonly with a tuft 
of hairs at the apex, otherwise usually glabrous 
throughout. 
Leaves minutely and sparingly pubescent on both sur- 
faces; petals about three fourths as long as the fila- 
ments; outer surface of the sepals sparingly villous. 
**Hypanthium much longer than broad, at least half the length of 
the sepals ; stems with nodal spines, but without bristles. , 
Leaves rarely glandular beneath; hypanthium and sepals very 
rarely with glandular hairs; bristles of the ovary mostly 
non-glandular. 
Herbage, hypanthium, and sepals glabrous. 
Hypanthium and sepals pubescent, the leaves usually so. 
Leaves glandular beneath ; hypanthium and sepals with some 
gland-tipped hairs; bristles of the ovary wholly or chiefly 
gland-tipped. 
6, Anthers not evidently broader at the base than at the apex, usually 
less than 2 mm. long. 
* Styles smooth throughout. 
+ Flowers deep-red or purple; filaments twice the length of the 
petals or more. (LOBBII.) f 
New growth conspicuously clothed with coarse bristly hairs in 
addition to the nodal spines; anthers 2 mm. or more in 
length. 
New growth very rarely with a few bristles in addition to the 
nodal spines. 
Leaves densely glandular and viscid beneath ; hairs of the 
ovary all gland-tipped ; anthers nearly as broad as long, 
granuliferous on the back. 
Leaves glabrous or nearly so on the back ; ovary with larger 
non-glandular bristles as well as gland-tipped hairs; an- 
thers more than twice as long as broad, not granuliferous 
on the back. 
++ Flowers usually of some other color ; filaments (except in G. 67- 
nominata, a species with green calyx and very spiny fruit) 
equaling or shorter than the petals. 
§ Ovary densely bristly, the bristles developing into sharp 
spines in fruit. 
° Hypanthium and sepals orange or purplish, the former 
usually one half or more the length of the latter, together 
10 to 16mm. long ; berry dark-purple at maturity. (PINE- 
TORUM.) 
°° Hypanthium and sepals green, the former less than one 
half the length of the latter, together 6 to 10 mm. long; 
berry greenish-yellow at maturity. (WATSONIANAE.) 
Leaf-blades without gland-tipped hairs ; stamens exceed- 
ing the petals by usually more than the length of their 
anthers, 
Leaf-blades with stout gland-tipped hairs on both sur- 
faces; stamens, including their anthers, equaling 
the petals. 
Plant erect; shoots merely puberulent ; anthers about 
1 mm. long. 
[VoLumME 22 
4. G. Menziesii. 
5. G. Hystrix. 
6. G. lepiosma. 
8. G. californica, 
9. G. hesperia. 
10. G. cruenta, 
11. G. Roezli. 
12. G. amara. 
13. G. sericea. 
14. G. Lobbii. 
15. G. Marshall. 
16. G. pinetorum. 
17. G. binominata. 
18. G. Watsoniana. 
